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Erin Morris Gerard T. Kyle Kenneth E. Wallen James Absher 《Leisure Sciences: An Interdisciplinary Journal》2013,35(6):494-507
ABSTRACTThe effects of gender on involvement in high-risk recreation have received limited research attention despite mounting evidence suggesting the learned interactions between people and places likely vary for men and women. The purpose of this study was to provide insights into how gender influenced the motivation-involvement relationship among whitewater recreationists on a Wild and Scenic River in California. Our results revealed the motivations of Risk, Escape, Learning, and Achievement/Stimulation positively influenced involvement in rafting activities. Although gender did not influence all dimensions of involvement, we found that identity expression varied between subgroups. Specifically, men were more likely to ascribe meaning to rafting than women because this activity allowed them to affirm and express their individual character. The implications emanating from this study advance theoretical understanding of the factors that influence enduring involvement and inform natural resource management decisions about maintaining the desired benefits of activities sought by nature-based recreationists. 相似文献
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Martin Weiss Author Vitae Martin Junginger Author VitaeAuthor Vitae Kornelis Blok Author Vitae 《Technological Forecasting and Social Change》2010,77(3):411-8581
Transitioning towards a sustainable energy system requires the large-scale introduction of novel energy demand and supply technologies. Such novel technologies are often expensive at the point of their market introduction but eventually become cheaper due to technological learning. In order to quantify potentials for price and cost decline, the experience curve approach has been extensively applied to renewable and non-renewable energy supply technologies. However, its application to energy demand technologies is far less frequent. Here, we provide the first comprehensive review of experience curve analyses for energy demand technologies. We find a widespread trend towards declining prices and costs at an average learning rate of 18 ± 9%. This finding is consistent with the results for energy supply technologies and for manufacturing in general. Learning rates for individual energy demand technologies are symmetrically distributed around the arithmetic mean of the data sample. Absolute variation of learning rates within individual technology clusters of 7 ± 4%-points and between technology clusters of 7 ± 5%-points both contribute to the overall variability of learning rates. Our results show that technological learning is as important for energy demand technologies as it is for energy supply technologies. Applying the experience curve approach to forecast technology costs involves, however, unresolved uncertainties, as we demonstrate in a case study for the micro-cogeneration technology. 相似文献
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Martin GrenAuthor Vitae 《Annals of Tourism Research》2012,39(1):155-170
Given that tourism is an “earthly business”, why is it that the Earth rarely explicitly appears in tourism studies and tourism theory? In an attempt to grapple with this paradox, this paper seeks to contribute to a conceptual re-cognition of the Earth in tourism theory by probing some theoretical obstacles and possibilities. The paper demonstrates how the Earth has been conceptually erased in tourism theory by a privileging of the mapping of tourism and tourists onto the reference plane of the social. As an alternative the paper seeks to provide a geo-philosophically informed conceptualisation of the Earth as a primary plane of reference of which tourism is a particular form of de/re-territorialisation. 相似文献
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Jared P. Keller Author Vitae Author Vitae Yuan Lin Author Vitae 《Technological Forecasting and Social Change》2010,77(7):1014-1036
Dismantling dark networks remains a critical goal for the peace and security of our society. Terrorist networks are the most prominent instantiation of dark networks, and they are alive and well. Attempts to preemptively disrupt these networks and their activities have met with both success and failure. In this paper, we examine the impacts of four common strategies for dismantling terrorist networks. The four strategies are: leader-focused, grassroots, geographic, and random. Each of these strategies has associated pros and cons, and each has different impacts on the structure and capabilities of a terrorist network. Employing a computational experimentation methodology, we simulate a terrorist network and test the effects of each strategy on the resiliency of that network. In addition, we test scenarios in which the terrorist network has (or does not have) information about an impending attack. Our work takes a structural perspective to the challenge of addressing terrorist networks. Specifically, we show how various strategies impact the structure of the network in terms of its resiliency and capacity to carry out future attacks. This paper also provides a valuable overview of how to use agent-based modeling for the study of complex problems in the terrorism, conflict studies, and security study domains. 相似文献
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Letizia Mortara Simon J. FordAuthor VitaeManuel JaegerAuthor Vitae 《Technological Forecasting and Social Change》2013
Idea Competitions (ICs) are becoming a popular mechanism chosen by firms to perform Open Innovation. They are a way to engage with external sources of knowledge such as individual entrepreneurs and small firms who are asked to submit ideas and compete for a prize. However, little is known about the success of ICs as acquisition mechanisms. The researchers conducted interviews in five multinational companies to evaluate the effects of using ICs as an acquisition mechanism. Although still preliminary, the results of this study show that the success of ICs as an acquisition mechanism remains uncertain because their output (i.e. the number of ideas acquired) is often low compared to the input (i.e. the number of ideas submitted) and effort required to run them (e.g. to vet ideas). Across the cases observed, ICs appear to be more successful at identifying and acquiring early-stage ideas, particularly those outside the current business focus. The study shows that ICs deliver other functional benefits such as improved intelligence and public relations and that these need to be considered as part of the evaluation of the IC's success. The paper concludes by discussing the conditions in which ICs are implemented and the implications for Open Innovation theory. 相似文献
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Yu Sang Chang Author Vitae Seung Jin Baek Author Vitae 《Technological Forecasting and Social Change》2010,77(5):712-729
The evolution of civilization appears to have primarily resulted from continuous improvement made possible by technological advances. A group of social evolutionists and economists have identified, among others, energy, transport, as well as information and communication to be the three most influential technologies. On the other hand, a number of eminent scholars have cited several forces, natural, physiological, technological, as well as environmental which can place a limit on on-going improvement.The purpose of this paper is to empirically explore the continuous improvement process as well as the limit placed on these three technologies. Using the framework of both connected and disconnected multiple technology S-curves and X-factor, historical improvement data on these three elements have been analyzed. The results of our analysis indicate that improvement in general has continued without limit mainly due to a series of emerging new technologies. These emerging technologies can be either connected or disconnected from the existing mature technologies. Our preliminary analysis shows that much of the past improvement comes from new technologies that on first serious application appear to be substantially superior from earlier technologies. In addition, enormous continuous improvement, which has accompanied both connected and disconnected new technologies appear to have played the critical role in sustaining the evolution of civilization. The paper discusses a number of policy implications and suggests topics for future research. 相似文献
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Dharm Kapletia Author Vitae 《Industrial Marketing Management》2010,39(4):582-592
This article explores the acquisition of business solutions in complex systems environments, through insights drawn from current literature and a study of the UK defense industry. We seek to counter-balance the dominance of literature focusing on the supplier perspective, as well as provide richer distinctions between different kinds of system suppliers involved in providing business solutions. We do this through the detailed examination of customer support offerings and business relationships that exist at the system customer-supplier interface. Our findings provide a map of solutions models that exist in the UK defense context. These include: (1) product system support, (2) life cycle product system support, (3) functional system support, and (4) enterprise system support. Using these models, we highlight the continued relevance of a product orientation and the challenges involved in adopting a true customer orientation when delivering business solutions. System suppliers seeking to reposition from the supply of product system support towards more integrated and customer-oriented forms of support require a significant organizational step change. 相似文献